Treasure hunt APP using qr codes

Need to produce a nice looking app following a treasure hunt around a local place of interest (local to plymouth) app needs to display for example 3 things that are near when you scan the located qr code, user has to find it and when done or before user clicks on the image on phone screen of the item qr code asked for and app displays info about the object. Ideally with a then prompt from the app to take a picture tagging and posting to facebook automatically then at the end of the treasure hunt the user scans a finish qr code, app tallies up how many qr codes or items were found gives a score sheet and the option of posting to facebook.. The back end of the app would be a mini encyclopedia for local place. Not naming the place yet as you can see, although it is a big name but also a charity so (not like oxfam) low budget. Need it for the iphone and android but iphone initially. Need a very quick turn around for this app.

Good Afternoon!
My name is Eric Mitchell and I'm quite intrigued by your treasure hunting app project as we have built a variety of apps in the past. After reading the description, I am confident we can produce an aLagi

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